package com.qk.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.PageResult;
import com.qk.dto.UserDto;
import com.qk.entity.User;
import com.qk.exception.BusinessException;
import com.qk.mapper.UserMapper;
import com.qk.service.UserService;
import com.qk.utils.JwtUtils;
import com.qk.vo.LoginResultVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Slf4j
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;

    //1. 用户列表查询
    @Override
    public PageResult<User> list(UserDto userDto) {
        //1.设置PageHelper分页参数
        PageHelper.startPage(userDto.getPage(), userDto.getPageSize());
        //2.调用mapper接方法，执行查询
        List<User> UserList = userMapper.selectList(userDto);
        //3.解析并封装成PageResult返回分页结果
        Page<User> page = (Page<User>) UserList;
        return new PageResult<>(page.getTotal(), page.getResult());

    }

    //3. 添加用户
    @Override
    public void add(User user) {
        //1.补全属性
        user.setCreateTime(LocalDateTime.now());
        user.setUpdateTime(LocalDateTime.now());

        //2.设置默认密码
        String password = user.getUsername() + "123";
        user.setPassword(DigestUtils.md5DigestAsHex(password.getBytes()));
        userMapper.insert(user);

    }

    //2. 删除用户
    @Override
    public void deleteByIds(List<Integer> ids) {
        userMapper.deleteByIds(ids);
    }

    // 4. 根据ID查询
    @Override
    public User getById(Integer id) {
        return userMapper.selectById(id);
    }

    //5. 修改用户
    @Override
    public void update(User user) {
        user.setUpdateTime(LocalDateTime.now());
        String password = user.getUsername() + "123";
        user.setPassword(DigestUtils.md5DigestAsHex(password.getBytes()));
        userMapper.update(user);
    }

    //6. 查询所有用户
    @Override
    public List<User> list() {
        return userMapper.list();
    }

    //7. 根据角色查询用户
    @Override
    public List<User> listByRole(String roleLabel) {
        return userMapper.listByRole(roleLabel);
    }

    //8. 根据部门查询用户
    @Override
    public List<User> listByDept(Integer deptId) {
        return userMapper.listByDept(deptId);
    }

    //登录
    @Override
    public LoginResultVo login(User user) {
        //1.调用mapper
        User u = userMapper.selectByUsername(user.getUsername());
        //2.判断用户是否存在
        if (u == null) {
            log.info("用户不存在");
            throw new BusinessException("用户名错误！！！");
        }
        //3.判断密码是否正确
        String _pass = DigestUtils.md5DigestAsHex(user.getPassword().getBytes());
        if (!_pass.equals(u.getPassword())) {
            log.info("密码错误");
            throw new BusinessException("密码错误！！！");
        }
        //4.判断状态是否正确
        if (u.getStatus() != 1) {
            log.info("用户已停用！");
            throw new BusinessException("用户已停用！！！");
        }

        //5.返回登录结果
        LoginResultVo loginResult = new LoginResultVo();
        loginResult.setId(u.getId());
        loginResult.setUsername(u.getUsername());
        loginResult.setName(u.getName());
        loginResult.setImage(u.getImage());
        loginResult.setRoleLabel(u.getRoleLabel());
        loginResult.setToken("");


       //调用工具类，生成jwt令牌
        Map<String, Object> claims = new HashMap<>();
        claims.put("id", u.getId());
        claims.put("username", u.getUsername());
        String jwt = JwtUtils.generateToken(claims);
        loginResult.setToken(jwt);


        return loginResult;
    }
}

